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Finding the Fourth Proportional to 613,289,717.20, 919,934,575.80 and 368,401,704.40

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Solution

The fourth proportional to 613,289,717.20, 919,934,575.80 and 368,401,704.40 is: 552,602,556.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,289,717.20 : 919,934,575.80 = 368,401,704.40 : x
  2. Step 2: Convert to fraction form
    613,289,717.20/919,934,575.80 = 368,401,704.40/x
  3. Step 3: Cross multiply
    613,289,717.20x = 919,934,575.80 × 368,401,704.40
  4. Step 4: Simplify right side
    613,289,717.20x = 338,905,465,661,210,944
  5. Step 5: Solve for x
    x = 338,905,465,661,210,944/613,289,717.20
  6. Step 6: Final answer
    x = 552,602,556.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.